输入某年某月某日，判断这一天是这一年的第几天

# ！/usr/bin/python3

# *_*coding:utf8 *-*
# @Time     :2022-11-08
# @Author   :jeck
# @Email    :
# @File     :question4.py

# 输入某年某月某日，判断这一天是这一年的第几天

year = int(input('输入年：'))
month = int(input('输入月：'))
day = int(input('输入日：'))

day_Sum = 0
isLeapYear = False  # 是否是闰年。
if year % 4 == 0:
    if year % 100 != 0:
        isLeapYear = True
    elif year % 400 == 0:
        isLeapYear = True
else:
    isLeapYear = False

Month_day = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]

for i in range(month):
    day_Sum += Month_day[i]

day_Sum += day
if isLeapYear:
    day_Sum += 1

print (day_Sum)